Abstract: The physics of the strong nuclear force is the least understood segment of the Standard Model of particle physics due to the self-interaction of its mediator the gluon. The Electron-Ion Collider (EIC), which will be constructed at Brookhaven Labs in the US, will provide a new frontier in proton and nuclear precision measurements and open a new window of strong force phenomena. We will among other things be able to discover and measure a new state of matter, the Color Glass Condensate, which is formed when the density of gluons in the target nucleus becomes extremely high. Due to its large luminosity and hermetic detector(s) the EIC will also be able to measure the spatial structure of hadrons. In my talk, I will give a brief overview of the EIC, and explain how we can use it for precision tomography of protons, heavy ions, and even virtual pions.